From patchwork Fri Mar 4 09:33:59 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miaohe Lin X-Patchwork-Id: 12768810 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id F38EEC433F5 for ; Fri, 4 Mar 2022 09:35:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 8ACE68D0009; Fri, 4 Mar 2022 04:35:06 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 857358D0005; Fri, 4 Mar 2022 04:35:06 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 573258D0009; Fri, 4 Mar 2022 04:35:06 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.26]) by kanga.kvack.org (Postfix) with ESMTP id 44FF08D0005 for ; Fri, 4 Mar 2022 04:35:06 -0500 (EST) Received: from smtpin10.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 2244120D33 for ; Fri, 4 Mar 2022 09:35:06 +0000 (UTC) X-FDA: 79206195012.10.36ECF46 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by imf25.hostedemail.com (Postfix) with ESMTP id 73897A0010 for ; Fri, 4 Mar 2022 09:35:05 +0000 (UTC) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4K92jN47dkzdbB2; Fri, 4 Mar 2022 17:33:44 +0800 (CST) Received: from huawei.com (10.175.124.27) by canpemm500002.china.huawei.com (7.192.104.244) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Fri, 4 Mar 2022 17:35:02 +0800 From: Miaohe Lin To: CC: , , , , , , , , , , , , , , , , , , Subject: [PATCH 06/16] mm/migration: use helper function vma_lookup() in add_page_for_migration Date: Fri, 4 Mar 2022 17:33:59 +0800 Message-ID: <20220304093409.25829-7-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20220304093409.25829-1-linmiaohe@huawei.com> References: <20220304093409.25829-1-linmiaohe@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 73897A0010 X-Stat-Signature: u7p9b6d394dcs9sx3aoxncnbxicgx6ra Authentication-Results: imf25.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=huawei.com; spf=pass (imf25.hostedemail.com: domain of linmiaohe@huawei.com designates 45.249.212.187 as permitted sender) smtp.mailfrom=linmiaohe@huawei.com X-Rspam-User: X-HE-Tag: 1646386505-269076 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: We could use helper function vma_lookup() to lookup the needed vma to simplify the code. Signed-off-by: Miaohe Lin --- mm/migrate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index 15cac2dabc93..bc79d7338780 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1613,8 +1613,8 @@ static int add_page_for_migration(struct mm_struct *mm, unsigned long addr, mmap_read_lock(mm); err = -EFAULT; - vma = find_vma(mm, addr); - if (!vma || addr < vma->vm_start || !vma_migratable(vma)) + vma = vma_lookup(mm, addr); + if (!vma || !vma_migratable(vma)) goto out; /* FOLL_DUMP to ignore special (like zero) pages */